PSHA Sensitivity Studies: Parameters Impacting Ground Motion Hazard Curves
In this video, we perform sensitivity studies of Probabilistic Seismic Hazard Analysis (PSHA) results by varying different input parameters and observing their effects on the ground motion hazard curves. Using the Gutenberg-Richter example as a baseline, we explore the impact of changes in earthquake rupture rates, the minimum magnitude (Mmin), maximum magnitude (Mmax), and the standard deviation (sigma) in the ground motion model. Each section is accompanied by visual aids and detailed explanations to enhance your understanding of how these parameters influence ground motion predictions.
00:00 Introduction to PSHA Sensitivity Studies
00:16 Baseline Parameters and Rupture Rates
02:18 Impact of Minimum Magnitude (Mmin)
05:50 Impact of Maximum Magnitude (Mmax)
08:23 Impact of Ground Motion Model Standard Deviation (Sigma)
17:14 Conclusion and Practical Implications
This video is based on material from the book “Seismic Hazard and Risk Analysis” by Jack Baker, Brendon Bradley, and Peter Stafford (Cambridge University Press, 2021).
See www.pshabook.com for links to purchase the book, code to demonstrate calculations, and more.
Publisher website: www.cambridge.org/9781108425056